Thank you.
I also have one last question for you, Mr. Steward. You talk about the environment in a holistic way. The cost of the development once these elements become more rare, once they're mined a little bit, is going to obviously change the dynamics of battery production to the point where the CO2 emissions involved in mining these elements are going to be greater, perhaps, than the CO2 they replace in the transportation chain, if you will.
Do you have any comments on that?